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Finding the Fourth Proportional to 56,458.74, 84,701.02 and 19,017.84

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Solution

The fourth proportional to 56,458.74, 84,701.02 and 19,017.84 is: 28,531.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,458.74 : 84,701.02 = 19,017.84 : x
  2. Step 2: Convert to fraction form
    56,458.74/84,701.02 = 19,017.84/x
  3. Step 3: Cross multiply
    56,458.74x = 84,701.02 × 19,017.84
  4. Step 4: Simplify right side
    56,458.74x = 1,610,830,446.20
  5. Step 5: Solve for x
    x = 1,610,830,446.20/56,458.74
  6. Step 6: Final answer
    x = 28,531.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.